ATPL⽹上题库3⽓象
3⽓象
(1)The approximate percentage of oxygen at ground level
is
A．20%
B．15%
C．41%
正确答案：A
(2)Where is a common location for an inversion?
A．Tropopau
B．Stratosphere
C．Ba of cumulus clouds
正确答案：B
(3)The ction of the atmosphere surrounding the earth
and clost to surface is called
A．troposphere
B．Stratosphere
C．tropopau
正确答案：A
(4)What feature is associated with a temperature
inversion?
A．a stable layer of air
B．an unstable layer of air
C．air mass thunderstorms
正确答案：A
(5)What characterizes a ground-bad inversion? ?A．convection currents at the surface B．cold temperatures
C．poor visibility
正确答案：C
(6)What condition produces the most frequent type of
ground-or surface-bad temperature inversion?
A．the movement of colder air under warm air or the movement of warm air over cold air B．widespread sinking of air within a thick layer aloft resulting in heating by compression C．terrestrial radiation on a clear, relatively calm night
正确答案：C
(7)What is a characteristic of the troposphere?
A．it contains all the moisture of the atmosphere ?B．there is an overall decrea of temperature with an increa of altitude
C．the average altitude of the top of the troposphere is about 6 miles
正确答案：B
(8)The heat of the stratosphere air is chiefly from
A．the absorption of sun radiation by the water vapor
B．the absorption of sun ultraviolet ray radiation by the ozone
C．the absorption of ground radiation by the air.
正确答案：B
(9)The time of the day when the earth’s surface gives
off the greatest amount of terrestrial radiation is ?A．a few hours before midnight
B．at sunt
C．mid afternoon
正确答案：C
(10)When does min temperature normally occur during a
24 hours period?
about 1 hour before sunri
at midnight
after sunri
正确答案：c
由于太阳辐射强度的⽇变化，⽓温在⼀⽇之中也呈现周期性变化，有⼀个最低值和最⾼值，最低值⼀般出现在早晨⽇出后，最⾼值出现在当地正午后2⼩时左右。
(11)The heat of the troposphere air is chiefly from
A．the absorption of sun radiation by the water vapor
B．the absorption of sun ultraviolet ray radiation by the ozone
C．the absorption of ground radiation by the air
正确答案：C
(12)Which of the following is not correct?
A．solar radiation penetrates the atmosphere more readily than terrestrial radiation6
B．the amount of solar radiation absorbed at the earth surface is independent of the type of surface
C．water vapour and carbon dioxide are important absorbers of terrestrial radiation
正确答案：A
(13)What is the approximate rate unsaturated air will
cool flowing upslope?
A．3°C per 1,000 feet
B．2°C per 1,000 feet
C．4°C per 1,000 feet
正确答案：A
(14)Which process caus adiabatic cooling?
expansion of air as it ris
movement of air over a colder surface
relea of latent heat during the vaporization process
正确答案：A
(15)Which term applies when the temperature of the air
changes by compression or expansion with no heat added or removed? A．Katabatic
B．Advection
C．Adiabatic
正确答案：C
(16)When saturated air moves downhill, its temperature
increas
at a faster rate than dry air becau of the relea of latent heat
at a slower rate than dry air becau condensation releas heat
at a slower rate than dry air becau vaporization us heat
正确答案：C
(17)A record of atmospheric temperature can be read for
a
A．barograph
B．thermogram
C．thermograph
正确答案：B
(18)In average, for every 1,000 feet increa in the
troposphere, the temperature of the air will
A．descend 2°C
B．descend 3°C
C．descend 4°C
正确答案：A
(19)A temperature of 45℃ is
A．57℉ or 273K
B．113℉ or 273K
C．113℉ or 318K
正确答案：C
K=273.15+攝⽒溫度c=(℉-32)*5/9
20)What condition produces the most frequent type of
ground-or surface-bad temperature inversion?
A．the movement of colder air under warm air or the movement of warm air over cold air
B．widespread sinking of air within a thick layer aloft resulting in heating by compression
C．terrestrial radiation on a clear, relatively calm night
正确答案：C
(21)What is the primary cau of all changes in the
Earth’s weather?
A．change in air pressure over Earth’s surface ?B．variation of solar energy at surface
C．movement of air mass from moist areas to dry areas
正确答案：B
(22)The surface air temperature of a running will
depend on all of the following
A．airfield elevation, runway length and slope, airfield latitude and wind
B．airfield elevation and latitude time of the year, time of day, runway surface prevailing wind and cloud cover C．airfield elevation runway length, prevailing wind and the time of day
正确答案：B
(23)Which pressure is defined as station pressure? ?A．Altimeter tting.
B．Actual pressure at field elevation.
C．Station barometric pressure reduced to a level.
正确答案：B
(24)Dew point is
A．the temperature to which dry air must be cooled in order to just reach saturation
B．the temperature at which a parcel at air reach super saturature point, irrespective of pressure
C．the TEM to which saturated air must be cooled to produce condensation
正确答案：A
(25)The dew point temperature is higher when
air is very warm and dry
air is very cold and moist
air pressure is lower
正确答案：B
露点温度和空⽓中⽔汽含量和⽓压⼤⼩有关。⽓压⼀定时，⽔汽含量越多，露点温度越⾼；在⽔汽含量不变的情况下，⽓压降低时，露点温度随之降低。
(26)What weather condition occurs at the altitude where
the dewpoint lap rate and the dry adiabatic lap rate converge? precipitation starts
cloud bas form
stable air changes to unstable air
正确答案：B
(27)What weather difference is found on each side of
a “dry line”?
extreme temperature difference
strut versus cumulus clouds
dewpoint difference
正确答案：C
(28)The human body is comfortable at normal temperatures. When the relative humidity is?
A．60-80%
B．40-60%
C．20-30%
正确答案：B
(29)The relative humidity will be 100% when
A．dew point< bulb>
B．wet bulb and dry bulb equal
C．dew point>dry bulb
正确答案：B
(30)The water vapor held in unsaturated air is
A．invisible always
B．visible always
C．visible only if temperature is low enough
正确答案：A
(31)Which event usually occurs after an aircraft pass
through a front into the colder air
temperature/dewpoint decreas
atmosphere pressure increas
wind direction shifts to the left
正确答案：B
(32)Water is said to have a greater value of specific
